Spring-link.



F. LACAMBRA. SPRING LINK. APPLICATION FILED was, 1916.

Patented Feb. 20,1917.

Q as 3 M w FRANQOIS LACAMBRA; 0F BAYONNE, FRANCE.

SPRING-LINK.

Specification of Letters Patent Patented Feb. so, 191 7.

Application filed August 8, 1916. Serial No. 113,783.

To all whom it may concern:

Be it known that I, FRANgoIs LAoAMBnA, a citizen of the French Republic, residing at Rue loissonnerie Bayonne, France, have invented certain new and useful Improvements in Spring-Links, of which the following is a specification. 7.

This invention relates to spring links or shock absorbers of the kind eyes and mit the two rods or the like to beplaced close together SlClG they are held by the spring pressed by theflanges when tension is applied to theends of the link.

This invention has for its object to provide an improved metal spring link or barof this type which can be applied to various industries, particularl togymnastic or exercising apparatus, to buckle-making, to the stoppers ofiflasks and bottles containing everages or liquids which'are sterilized or under pressure, to the bung-holes of casks and other rods of circular along their' contacting surfaces, ment of fixed collars or flanges which are notched instead of slotted for the passage of the rods, andthe formingof theeyesby bending theends of the rods as hereinafter described.

It may here be pointed out thattheapplicationof spring links of other types than those herein described to'bottlestoppers and buckles is notclaime'd as such have been already employed.

Jn a practical form, .-the link or connection comprises two metal .rods or bars of halfroundsectionor formed with aflatface over the wholelength thereofso that .these rods can: bear. andslide. one against; the other with their flat surfaces in contact.

, is provided .Wlth a collar in which a rectangular, or trapezoidal notch iscut for the accommodationof the other rod and theother end is bent over to Form an eyethe bending beingeliected in such manner that the eye serves as a stop.

he two rods are juxtaposed with the. eyes at: the outer ends.

helical spring is coiled around the tWo juxtaposed rods and lies-between the collars of the two rods. 'lhe length ofithespring and the number vary. .7

The accompanying drawing illustrates this device and some of applications, on tie one hand to a buckle and on the other hand to the lever stoppers of bottles, flasks or other receptacles. Figure l is a side elevation of the spring in c.

of its convolutions may Figs. 2, 3 and 4 are transverse sections of the link taken respectively through n w, z-z and pay.

Fig. 5 is a side elevation of a spring in which each of the plates which are on one of the ends of each k is connected with a l scale placed parallel to tl the said rods.

flig. 6 is a transverse section of the link taken through 0c-a2 ig is a view .as seen from the right extremity. 7 i

Fig. 8 a front elevation of a gymnastic apparatus for use by hand, comprising the employment of two links.

Fig. 9 showsthe method of connecting the two sliding rods which join the handles of tiis. gymnastic hand apparatus.

Fig. .10 isa longitudinal s'ectionof a cask bung-h0le furnished with a plug held opposite the body of the bung-holeby two links placed outside near the side of the plug.

Figs. 11 and\l2 are respectively a side view and a plan of .an ordinary buckle A made extensible by the application of two spring links.

Fig. 13 illustrates known necks D or flasks I in which is firmly secured to the month by the application of two spring links coiiperating with the ordinarylinks employed on these receptacles.

'As showinthe.spring link (Figs. 1 to l) consists oftwoi rectilinealmetal rods 1 of circularor other sectionbut each havinga fiat face 2 by means of which they rest one on the. other and can ireely slide one against the/other. .Each rod 1 is furnished at one of its ends with a collar. ornfiange Itnotched at 4 to enable the flat surfaces of the rods to lie closetogether. The notches d correspond in shape to the sections oftherodsto enableithem to slide-freely in the notches. Theouter opposite endsofthe rods '1 are bentto orm eyes 6. When the two rods 1 are superposed, theirsflat parts 3 and. their grad: 1e axis Oil of this form forms of bottle the stopper A runner 10 and the ring 11 to slide eye 6 is then formed at the end together compressing eyes Gare placed opposite one another and the eye part of one of the rods comes against the outer unnotched surface of the flange 3 of the other rod. A spiral spring 5 incloses the two juxtaposed rods and its coils which are not compressed and the num ber of which is variable extend over its whole length between the flanges 3. In order to mount the spring 5 around the rods 1, the latter before being bent to form the eyes 6, are passed in opposite directions into the hollow center of the springgthe of each rod facing the flange Softhe other rod, the endv of the eye being placed against the unnotched portion of the flange 3.

In the form of the link shown in 5 and 7, one of the plates 3 forms part with a. scale 7 which is placed parallel to and at a slight distance from the juxtaposed rods 1, the other plate 3' is furnished with an arm 8 formed by a wire, into the loop or buckle 9 of which the end of the scale enters. On this scale starting from the loopor buckle 9 a runner 10 is threaded and following this an india rubber ring 11. a pull toward the outside be exercised the hooks 6 of the link the plates 8, 3 come between them the the arm 8 then causes the on the hen the pull ceases the arm 8 spiral spring ,5,

scale .7."

7-. movestoward its'initial position, the runner I apparatus runs one o the same link 10 remains in its place on the scale and shows on this scale the degree corresponding to the maximum of th'e'force applied.

One or more spring links may be applied to numerous objects so as to make them extensible.

In the gymnastic apparatus for use by hand illustrated in Figs. 8 and 9, the two parallel handles H made of wood or other material have each running through them longitudinally a metal rod 15 which extends to'the outside and takes a position perpendicular to the handle, its end is counter bent at 16 ata right angle toward the outside, that is to say parallel. to the handle, here it receives a ring 17. Into each of the two rings 17 situated on the same side of the f the two hooks 6 of E. The parts of the rods 15 which come parallel and laterally to the handles H have a smooth part along which they lie and slide one against the other. In order to reduce the friction, a roller 19 running on the smooth part of the adjacent rod 15 may be pivoted in each rod 15, being retained opposite the other rod 15 by a ring 20 furnished with a roller 21. running over the outer surface of this other rod.

. Inthecask bung-hole Fig. 10 the plug C rests on the body B; two links E are fixed by their hooks 6 on rings 22 implanted in the body 13 and on open hooks 23 fixed in the plug C. When over-pressure arises in the cask provided with this bung-hole the plug C is raised, the springs 5 of the links E are compressed between the plates 3 and the gas is able to escape into the atmosphere. Directly the over-pressure ceases the expansion of the springs 5 brings the plug 0 on to the body B. The hooks 23 being open, the links E may be easily released from the plug C, which, being freed, allows of the cask being filled or emptied.

In Figs. 11 and 12 two spring links E of the type mentioned above are attached by one of their eyes to the cross bar (r of a buckle A. In the arrangement .hown in the upper part of Fig. 12 a notch 7) is formed in the cross bar a for positioning the eye 6. In the arrangement shown in the lower part a projection b is formed on the cross bar a, for retaining the eye 6 in position. The opposite eyes 6 of the two spring devices are held parallel and connected with the end eyes d of a coupling rod 0 placed parallel to the cross bar a of the buckle A.

In Fig. 13 two spring links E are combined with the metal mountings applied to bottles or receptacles B with the view of firmly fixing the stopper A in order to insure the tight closing of the mouth of the bottle. These spring links facilitate the release of the said stopper, avoiding a too great compression of the ring 0 made of india-rubber or other material.

The stopper A has running through it in the usual manner a wire 6 but the ends of this wire instead of hooking into the eyes of the link 9 are pivoted in the opposite holes h in the neck of the bottle. A spring link E of the type mentioned above is secured by one of its eyes 6 to the arm 0 which is flattened and perforated. The other link 6 of the spring device is attached to the wire that forms the link 9 opposite the link What I claim and desire to secure by Letters Patent is 1. In a spring link formed by two parallcl metal rods surrounded by a spiral spring, the combination of two juxtaposed rectilineal cylindrical rods each having throughout its length a fiat surface against which they bear and over which they slide one against the other; of a circular plate fixed eccentrically and invariably to one of theends of each of the said rods and having a notch extending from the flat surface of: the rod on which it is fixed up to the extreme edge of the said plate, the said notch having in section the form of the other rod which is intended toslide freel through it; of a hook formed at the end of said rod, opposite that furnished with a notched plate causing the rod to fold toward its flat surface so that the point of the hook comes opposite the 1,216,463 111 Ill:

t e two superposed rods and theircurvilineal periphery the coils or Windings of which extend over the whole distance existing between the plates which are at the one end of each of the two rods.

n a spring link formed by tWo parallel metal rods surrounded by a spiral spring, the combination of two juxtaposed rectilineal cylindrical rods each having throughout its length a flat surface along against which they bear and over which they slide one against the other; of a plate, formed with a notch fixed eccentrically to one of of the said rods and having very near to the ends of one opposite the said notch, in which the other rod is lodged and slid is provided with a scale extendlng parallel to the said rod throughout its in which a hole is drilled th the said scale freely runs; of a scale eXtending parallel to and at a slight distance from topics at this patent may be obtained for five cents each, by addressing the "commissioner arm in which it slides an indiarubber ring and a runner capable of sliding freely on the said scale opposite the graduations thereof; of a hook formed at the end of each rod, opposite that furnished with a te causing the rod to fold tosurface so that the point opposite the non-notched part of the other rod when th perposed; and of riphery, extend over the whole distance existing between the plates which are at the one end of each of the two rods.

In testimony whereof I aliix my signature in presence of two Witnesses.

FRANQOIS LACAMBRA. Witnesses:

EDMOND Toononon, WILLIAM P. SHooKnnY.

of Patents,

Washington, D. C. 

